Yes, but first you should make a page that acts as a landing strip for your users. Make the godown and then you can use Email marketing to funnel traffic to that godown.
To make money with the email you need to learn to draft emails that encourage the audience to click on and buy from you.
If you have an email, you can register on freelancer sites and get jobs there, an email is just to contact clients or asking works, it will not help you earn money online then
If you talk about email you should go for email marketing. Get leads and create a campaign that will help people and give you some profit. You need to use autoresponder and a landing page to do that.